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TRAILER JACK BASE
OWNER’S MANUAL
WARNING: Read carefully and understand all
INSTRUCTIONS before operating. Failure to follow the
safety rules and other basic safety precautions may result
in serious personal injury.
Item #999371
Thank you very much for choosing a NORTHERN TOOL + EQUIPMENT CO., INC. Product! For
future reference, please complete the owner’s record below:
Model: _______________ Purchase Date: _______________
Save the receipt, warranty and these instructions. It is important that you read the entire manual
to become familiar with this product before you begin using it.
This machine is designed for certain applications only. Northern Tool + Equipment cannot be
responsible for issues arising from modification. We strongly recommend this machine is not
modified and/or used for any application other than that for which it was designed. If you have
any questions relative to a particular application, DO NOT use the machine until you have first
contacted Northern Tool + Equipment to determine if it can or should be performed on the
product.
For technical questions please call 1-800-222-5381.
INTENDED USE
This trailer jack base, when used with appropriate trailer jacks, increases the stability of your trailer
and makes it safer to use on soft or rough terrain.
TECHNICAL SPECIFICATIONS & PACKING LIST
Item Description
Material Q235 steel
Tube diameter 2.24in. (5.7cm)
Size 6.7in.L × 4.7in.W × 2.6in.H (17 x 12 x 6.5cm)
GENERAL SAFETY RULES
WARNING: Read and understand all instructions. Failure to follow all instructions listed
below may result in electric shock, fire and/or serious injury.
WARNING: The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions or situations that could occur. It must be
understood by the operator that common sense and caution are factors which cannot be built into
this product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS
WORK AREA
• Keep work area clean, free of clutter and well lit. Cluttered and dark work areas can cause
accidents.
• Keep children and bystanders away while using this base and a trailer jack. Distractions can
cause you to lose control, so visitors should remain at a safe distance from the work area.
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• Be aware of all power lines, electrical circuits, water pipes and other mechanical hazards in
your work area, particularly those hazards below the work surface hidden from the operator’s
view that may be unintentionally contacted and may cause personal harm or property damage.
• Be alert of your surroundings. Using a trailer jack in confined work areas may put you
dangerously close to cutting tools and rotating parts.
PERSONAL SAFETY
• Use personal protective equipment. Always wear eye protection. Safety equipment such as
dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
• Do not overreach. Keep proper footing and balance at all times. This enables better control
of the trailer jack and base in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and
gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving
parts.
TOOL USE AND CARE
• Do not force the trailer jack to fit into the base tube. Do not attempt to lift more than the
rated maximum lifting capacity of the jack being used.
• Store idle jacks out of the reach of children and do not allow persons unfamiliar with the
jack or these instructions to operate it.
• Maintain your trailer jack base. Check for bent or damaged parts and any other
conditions. If damaged, have the jack base repaired before use or discard entirely.
• Use the jack base and accessories in accordance with these instructions, taking into
account the working conditions and the work to be performed. Use of the trailer jack base
for operations different from those intended could result in a hazardous situation.
OPERATION
WARNING: Trailer jack and base should be used on a smooth, level surface that is
capable of supporting a fully loaded trailer.
Step 1: Take the trailer jack base and linchpin out of the carton.
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Step 2: Insert the jack’s inner tube into the short tube of base. Secure the jack and base by
inserting the linchpin through the holes at the base to affix the base and inner tube.
Step 3: Jack base tube connect with the jack outer tube, the size is the same as base tube and
jack outer tube.
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MAINTENANCE
• Maintain your Trailer Jack Base. Before each use, inspect the general condition of the base.
Check for loose hardware, misalignment or binding of moving parts, cracked or broken parts
and any other condition that may affect its safe operation.
• Keep all moving parts lightly lubricated to prevent corrosion.
• After use, wipe external surfaces of the tool with clean cloth.
For replacement parts and technical questions, please call 1-800-222-5381.
WARRANTY
One-Year Limited Warranty
Distributed by
Northern Tool + Equipment Co., Inc..
2800 Southcross Drive West
P.O. Box 1499 Burnsville, MN 55306-6936
Made in China
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